123
Programless Communications
Section 5-1
2.
Make the PLC settings.
Use the GX Developer to make the communications settings.
Start the GX Developer, double-click
PLC Parameter
under
Parameter
in
the project tree, click the
I/O Assignment Setting
Tab, click the
Switch
Setting
Button on the I/O Assignment Setting Tab Page, and then set the
communications port of the Serial Communications Unit as outlined below.
Note
(1) To set a different baud rate from that given above, refer to
Baud Rate Set-
ting
on page 136 and change 0B.
(2) Refer to
MELSEC-QnA/QnAS Series
on page 136 if using a Communi-
cations Module for the QnA/QnAS Series.
3.
Make the EJ1 settings.
When using RS-232C, turn ON pin 8 on SW 2 (to select RS-232C) and
make the settings shown in the following table. No other settings are re-
quired.
For the default settings, data registers in the PLC are allocated to the EJ1
monitor and set values as shown in the following table. If the allocated words
shown below are already in use, change the words referring to
Programless
Communications Upload/Download Data Area (Variable Type: F0/B0)
on
page 132 and to
Programless Communications Upload/Download Start
Address (Variable Type: F0/B0)
on page 133.
Channel
Switch
number.
Bit
Description
Set
value
Position
Setting
CH1
SW01
b0
OFF
Transmission
setting
Operation setting
Independent
0BEEH
b1
ON
Data bits
8
b2
ON
Parity bit
Yes
b3
ON
Even/odd parity
Even
b4
OFF
Stop bits
1
b5
ON
Checksum
Yes
b6
ON
Write during RUN
Allowed
b7
ON
Setting modifica-
tions
Allowed
b8 to b15
---
Communications
rate setting
115200 bps (0BH)
SW02
---
Communications protocol setting
MC protocol format 5 0005H
CH2
SW03
Same settings as SW01.
SW04
Same settings as SW02.
Common
for both
CH1 and
CH2
SW05
---
Station number setting
0
0000H
Variable type
Parameter name
Setting/Monitor values
F0/B0
Programless Communications Protocol
(Common)
5: MC protocol (format 5)
Port C Send Wait Time
(Common) 1: 1 ms
Data register
Contents (monitor value)
Data register
Contents (set value)
D0
Read Response Bits
D1500
Read Request Bits
D1
Setting Change Response Bits
D1501
Setting Change Request Bits
D2
Operation Command Response Bits
D1502
Operation Command Request
Bits
D3
Communications Status
D1503
Operation Command Code
D4
Monitor Value A
D1504
Set Value A
Содержание EJ1 EtherCAT
Страница 2: ...EJ1 Modular Temperature Controllers User s Manual Revised July 2008 ...
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Страница 213: ...188 Detailed Description of Services Section 6 4 ...
Страница 227: ...202 Detailed Description of Services Section 7 5 ...
Страница 251: ...226 Determining the Error from the Current Situation for Heater Burnout Alarm Errors Section 8 8 ...
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